Circuit configuration having a feedback, fully-differential operational amplifier
US7414467B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Mar 13, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45526
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a circuit configuration having a feedback operational amplifier (AMP), which is implemented as fully differential, for amplifying an input signal differentially input to the circuit configuration and for outputting the amplified input signal as a differential output signal. In order to increase the freedom in setting the input common mode voltage, according to the present invention, a combination made of a coupling resistor (R1b) and a level shifter (I1b, Nsfb) connecting the positive amplifier output (y1) to the inverting amplifier input (x2) and a combination made of a coupling resistor (R1a) and a level shifter (I1a, Nsfa) connecting the negative amplifier output (y2) to the noninverting amplifier input (x1) are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.